Frank Chihyang Chen, M.D.
Family Medicine Physician · San Francisco, CA
Frank Chihyang Chen, M.D. is a family medicine physician with a practice address in San Francisco, California, and NPI 1104010586, issued on Aug 29, 2007. Check the license (California A120912, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frank Chihyang Chen
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A120912 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1800 31St Ave, San Francisco, CA 94122
- Phone
- (415) 677-2388
- Enumerated
- Aug 29, 2007
- Record last updated
- Jan 13, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150702000036); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1800 31St Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Frank Chihyang Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120912Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% more Medicare Part D claims than the average family medicine physician in 2024
5,709 Medicare Part D claims for 631 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 34 claims were for opioids.
Most prescribed
- Amlodipine Besylate577 claims
- Losartan Potassium390 claims
- Atorvastatin Calcium318 claims
- Arexvy273 claims
- Metoprolol Succinate248 claims
- Rosuvastatin Calcium240 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 99 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $176.72
7 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Chinese Hospital AssociationSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Frank Chihyang Chen among 17,133 family medicine physician records in California
Frank Chihyang Chen, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2005 · median 2005 among the 10,652 with a school on file
- Record last updated2016 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Wai-Lam Chan, M.D.San Francisco, CA 941221891791877
- Aaron Del Tredici, MDSan Francisco, CA 941221891822888
- Annette Enriquez, M.D, PH.D.San Francisco, CA 941221770693863
- Winston Goh, MDSan Francisco, CA 941221992930242
- Lisa Golden, MDSan Francisco, CA 941221699892067
- Elizabeth Johnson, MDSan Francisco, CA 941221558493585
- Wai-Hang Lam, M.D.San Francisco, CA 941221063669224
- Maria Lau, D.O.San Francisco, CA 941221043575491
Common questions
What is Frank Chihyang Chen, M.D.'s NPI number?
Frank Chihyang Chen, M.D.'s National Provider Identifier (NPI) is 1104010586, issued on Aug 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Frank Chihyang Chen, M.D. located?
The NPPES record lists a practice address at 1800 31St Ave, San Francisco, CA, 94122. Phone: (415) 677-2388. Providers update this record themselves, so call before visiting.
How can I verify Frank Chihyang Chen, M.D.'s license?
NPPES lists California license number A120912, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Frank Chihyang Chen, M.D. prescribe under Medicare Part D?
In 2024, Frank Chihyang Chen, M.D. had 5,709 Medicare Part D claims for 631 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Frank Chihyang Chen, M.D.'s MIPS final score?
The 2023 MIPS final score is 99 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.